City Offices Closed, New Years Eve and Day DecDecember 31 2025 All day Share Facebook Twitter Email City Offices will be closed in observance of the New Years Holiday. More upcoming events Porsches on the Plaza June 21, 2025 Sonoma Sundays in the Plaza with Music In Place June 22, 2025 Tuesday Night Market June 24, 2025 Sonoma Sundays in the Plaza with Music In Place June 29, 2025 Tuesday Night Market July 1, 2025 All events ยป